Journal of Kerbala University

1

Eman Ibrahim Awad

Pages: 1-6 English

on The characters table and rational valued characters table of the group (Q2m×D3)when m is even number and m=2p, p is prime number

Nesir Rasool Mahmood, mohsin shaalan abd_hussain

Pages: 93-115 English

Fahmi S. Radhi

Pages: 181-186 English

Full Text Issues

Abstract

Nonlinear optical properties of 2-Chloro-5-nitroanisole in chloroform solvent are studied employing different optical techniques. Experiments are performed using the diode laser beam at 532 nm wavelength and 50mW power. The effect of nonlinearity of 2-Chloro-5-nitroanisole in broadening the laser beam is observed. The optical limiting behavior is investigated by measuring the transmission of the samples. The nonlinear absorption coefficient is calculated using the open aperture Z-scan data, while its nonlinear refractive index is measured using the closed aperture Z-scan data. The nonlinear refractive index and absorption coefficient are found to be in the order of 1.24x〖10〗^7 〖cm〗^2⁄W and 8.68x〖10〗^(-3) cm⁄Wrespectively. The results indicate that 2-Chloro-5-nitroanisole is a potential candidate for low-power optical limiting application. The optical limiting behavior of the solvent of 2-Chloro-5-nitroanisole is also demonstrated

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Comparison between the results of applications of the Canadian and Bhargava methods for irrigation water quality index at multi- locations in Tigris River. (A Case Study of Al-amarah Region)

Nabaa Shakir Hadi

Pages: 187-196 English

Full Text Issues

Abstract

To understand the Iraqi water needs for different uses, it is important to study the quality of the water parallel with the quantity. In this research, two national methods are adopted to evaluate and judge the suitability of Tigris River (in Al-amarah region) for irrigation use. These methods include the water quality index (WQI) of the Canadian and Bhargava. These indices have been applied to assess the suitability of water for a variety of uses and reflects the status of water quality in lakes, streams, rivers, and reservoirs. The concept of WQIs is based on a comparison of the concentration of contaminants with the respective environmental standards.
Tigris River is one of the two main rivers passing through Iraqi land, the uses of its water are different and its use for irrigation depends on many environmental parameters ( CL-1, Ca+2, Mg+2, TDS, PH, EC, SO4-2 and SAR ). The researcher studied the quality of this river for irrigation use during year 2011. Seven locations were been taken on the Tigris river in Al-amarah Region in Iraq. The main results showed that there is no difference between the two techniques at significance level (0.01) and the quality of the river inter in Al-amarah Region classified as GOOD and FAIR according to Bhargava and the Canadian method respectively.

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Application of B-Spline to Numerical Solution of Free Damped Vibration Equation with Boundary Values Conditions

Adil Mohamad Hassan Rizak Al-Rammahi, Shahad Adel Taher alkhafaji

Pages: 197-211 English

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